Stenciling material



E. J. B'RAssEuR -STENCILING MATERIAL May 3'1, 1932.

Orignl Filed Nov. 14, 1928 2 Sheets-Sheet 1 INVENTOR BY Qmma @x ATTORNEY May 31, 1932.

E. J. BRASSEUR STENCILING MATERIAL original Filed Nov.14,' 1928 v2 sneets-sheet1 2 'v IN BY @Mm @.amfg C274 ATTORNEY VENTOR s then, with 'Patented May 31, 1932 UNITED STATES PATENT oFFlcE' ERNEST J'. BRASSE'UR, OF CHICAGO, ILLINOIS, ASSIGNOB. 'JTO A. 1B. DICK COMPANY, 0F CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS STENCILING MATERIAL Original application tiled November 14, 1928, Serial No. 319,224. Divided and this application Med April 15, 1930. Serial No. 444,384.

This invention relates to stenciling materialand more particularly to a stencil and associated backing adapted'to be passed around the platen roll of a writing machine, and a portion of the backing removed, to be operatively attached to the printing drum of a stencil duplicating machine. 'Ihe subject matter of this application has been divided out of my copending application, Serial No. 319,224, filed November 14, 1928.

In the use of writing machines such as the ordinary typewriter, for instance, difIiculty is constantly encountered in obtaining wrnf ten lines which are always in complete par'- allelism and properly and accurately spaced.

There is very apt to be some slippage between the sheet and the feed roller of the typewriter to skew the sheet toone side as it progresses through themachine. Again, the sheet ymay be slightly misadjusted in relation to the type, following erasures on the sheet, or from other causes. These inaccuracies become more evident when ruledpaper is used,

as is often necessary in preparing charts, re-

ports, etc. The result is a slovenly and unsightlyy piece of work.

This problem is much enhanced when a stencil sheetv is being typed and prepared to be later placed on a stencil duplicating machine. All errors and inaccuracies occurring on the stencil sheet, such as lack` of parallelism and 'proper spacing of the written lines, will be 'reproduced on each mimeographed copy.

The principal object of-my invention is to provide stenc' ing material 'adapted to be advanced through a' writing. machine by stages and Vin such a vmanner that the writ ten lines appearing on the sheet will be properly and accurately spaced and will be in accurate parallelism. y

Great difficulty has heretofore been experienced in stencil printing, narrow strips of cardboard used in index system. In cer# tain index systems, for example, it has been customary to use strips of about one-sixth of an inch in width by about five inches in length. Now it is at once apparent that when these strips are printed by means of a stencil there must be precise registration and parallelism .of each line on the stencil with each strip or else all of the printing W1l l not be imprinted on the respective strips. In one system the blank from whlch these strips are obtained comprises a card which has been partially cut through 1n parallel lines spaced apart the width of each strip. Usually the card is as wide as the strips are to be, the length depending upon how many strips are desired. More specifically an object of my invention 1s to'provlde a stencil sheet and associated backmg adapted for use in connectionwith my sheet manipulator, described inmy copendlng application above referred to, whereby a' stencil may be prepared in which the lmes impressed therein will correspond yexactlypin parallelism and spacing with the strip areas in a card or blank of the type referred to, so that when the stencil is used for printing such cards, each strip thereof will recelve all of the intended imprint, properly centered and registered thereon.

Another object of my invention is `to provlde a stencil sheet having means adapted for cooperation with certain securing elements associated with a stencil duplicating drum suchlvas is shown and described Lin any copending application above :referred to, whereby the stencil sheet will be Vpositively fixed to the drum and in such a mannertha-t accurate and precise registration of the stencil imprint on lthe work will be assured.

Generally, the object of this invention is to provide a novel stenciling material comprising astencil sheet and associated backing whereby the attainment of accuracy and precision in the placement of impressions on the sheet land accurate registration of stencil -imprint on the work can vbe uniformly `wide stenciling material comprising a stencil sheet secured along one edge to a backingy sheet which extends beyond the stencil sheet along both sides. Along each projecting side of the backing sheet is a row of holes uniformlyspaced apart.

The holes along one side of the backing sheet pair with the holes along the other side, so that when they are en aged selectively by the reciprocating armsv escribed in my copending application above referred to, the stencil sheet may be advanced uniformly over the platen roll of the writing machine. The backing sheet may be provlded with ruled lines visible through the stencil sheet, to facilitate the correct placement of thelimprint Aon the stencil sheet.

When. the imprinting operation has been completed, the intermediate and free end ortion of the backing sheet can be'torn o at the weakened line extending along the inner side of the attached margin of the stencil sheet. The perforated side of the backing sheet remaining secured to the stencil sheet then serves as a stub with which a line of pins provided on the stencil drum are adapted to engage. The outer free corners of the stencil sheet are also provided with apertures with which'spaced pins provided on the stencil drum may engage to hold .the stencil sheet firmly to the drum. The imrinted lines on the stencil sheet are thus isosed transversely of the axis of the drum, an

printed form end to end, instead of being dis osed parallel to the axis of the drum an printed in succession, as 1s customary. It has been found that when the lines are so disposed there is less likelihood of inaccurate registration. Also, in view of the fact that the weakened lines separating the strips of the index cards referred to, causes the cards to be flexible and apt to break apart when bent, it is much more satisfactory to move the cards through the machine wlth the strips disposed transversely of the axis of the drum. This makes for betterregistration and less likelihood of the cards buckling and breaking apart.

In order that a clearer understanding of this invention may be had, attention is hereby directed to the accompanying drawings, forming a part of this application and illustrating certain possible embodiments of thls invention.

Figure 1 illustrates a sheet of material and `more particularly a stencil sheet mounted on a backing sheet, the backing sheet having a row of holes along each side edge thereof with which the reciprocating arms ofl a sheet manipulator are adapted to engage to advance the sheet by stages over the platen of the typewriter;

Figure 2 is a transverse cross sectional view of my combined stencil sheet and backing therefore, taken on line 2 2 of Fig. 1;

Figure 3 is a top view of a stencil duplicating drum showing the manner of attaching my stencil sheet thereto; and

Figure 4 is a fragmentary portion of a same parts throughout the specification and drawings.

l My stenciling material is especially adapted for use in connection' with a sheet manipulator associated with a writing machine, such as is shown and described in my copending application above referred to. My stenciling material is of especial value in the preparation of mimeographed copies of reports, index files or cards, where it is of prime importance to have the mimeographed lines in accurate parallelism and properly spaced. Referring to the drawings, my stenciling material comprises a backlng sheet 10 of tough and strong but flexible material. A sheet of stencil paper 11 of the proper size is glued along one edge, as at 12, to the sheet of backing material 10. The backing material is of such size that the side portions 13 and 14 thereof extend a short distance beyond the side edges of the stencil sheet, as clearly shown in Figure 1.

A row of holes or apertures 15 is provided along each side ed e, in the side portions 18 and 14 of the bac 'ng sheet. The holes in the respective rows should be spaced the same distance apart so that corresponding holes in each row constitute paired holes adapted to -be enga ed by the sheet engaging arms 16 of t e sheet manipulator, shown in' dotted lines Figure 1. It is essential that the corresponding holes in the respective rowsbe spaced the same distance apart to insure complete parallelism of the lines. The distance between successive holes in the respective rows should be the same as the desired line spacing or a it is only necessary to space the holes in the backing sheet accordingly. y

The free corners of the stencil paper are each provided with a hole 17 for a pur ose hereafter to be described. The backing s eet `10 has a tear line 18 therein, extending along the inner attached margin of the stencil sheet, so that the left hand portion of the backing sheet comprising the center portion and side portion 13 can be torn ofi' from the right hand `side portion 14 when the typing work on the stencil paper has been completed. Side portion 14 of the backing sheet will then constitute a stub to which'the stencil sheet 11 is fastened.

For the purpose of illustrating the applicalits tion of my stencil sheet to the printin drum of a stencil duplicating machine; have shown in Figure 3 a printing drum of such a machine, comprising head portions 20 and 2l and body or barrel portion 22. A flat rack 5 bar 23, provided with spaced pins 24 along the body thereof, extends between and is secured to the head portions 20 and 21 of the printing drum. The holes 15 provided in the stub portion 14 of the backing sheet are adapted to be engaged over or threaded onto the pins 24 of the .rack bar 23 after the main portion of the backing sheet has been torn from the stub portion along the scored line 18. The barrel portion 22 of the drum is also rovided with -a pair of spaced pins 25 proJecting therefrom. Holes 17 in the stencil sheet are adapted to be threaded upon pins 25. When the stencil is thus secured to the drum, the typed lines thereon extend circumferentially of the drum, so as to print from end to. end.

When the stencil sheet has been properly secured to the duplicating-'drum of the machine, the sheet or card (shown in Figure 4) on which the stenciled matter is to be duplicated, is placed upon the feed table of the machine and fedunder the barrel portion 22 of the duplicating drum.

The index card shown in Figure'4-'comlprises a blank having a series of transverse cuts 26 therein partially cut through the blank material to form strips 27- of about` one-sixth of an inch wide. A line of print- 35 ing is placed on each of these strips by pass- 1ng the blanks under the duplicating drum with the strip formations extending longitudinally. The blanks are held in accurate stacked alignment on the feed table of the machine, and with the stencil sheet carefully imprinted and secured to lthe du licating drum in the manner above describe precise registration and complete parallelism of each line on the stencil sheet with each strip 26 results.

It is now seen that I have devised a stencil sheet so arranged that very fine printed work can be 'produced by the duplicating process. Cards, charts, reports and lined sheets can be duplicatedwith ease and pre cision, all printed lines appeari thereon,

properly positioned and accurate y spaced. Moreover, it is evident that my invention herein disclosed is` especially valuable for stenciling index cards comprising severable narrow index strips 27, as shown in Flg. 4 and as described hereinabove.

As many changes could be made in the above constructiomand many apparently different embodiments of this invention could be` made without departing from the scope thereof, it is intendedthat vall matter contained in the above description or shown in the above drawings should be interpreted as illustrative and not in a limiting sense.

What I claim is 1. A stencil comprising a stencil sheet and a backing therefor extending beyond opposite margins of the sheet, said sheet being attached to the backing along one margin thereof, said backing being weakened .at a.

ing, the free end of the stencil sheet being.

provided with apertures with which stud elements provided on the duplicating drum are adapted to engage to retain the stencil on the drum.

2. A stencil comprising a stencil sheet and a backing therefor extending beyond Opposite margins of the sheet, said sheet being attached to the backing along one margin thereof, said backing being weakened at a line extending along the inner side of said attached margin so that the central portion and one end portion of the backing may be removed by separating the backing along the weakened line wlthout detaching the stencil sheet from the other end portion of the backing, said end portion of the backing last mentioned and the opposite free end of the stencil sheet being provided with apertures with which spaced stud elements provided on the duplicating drum are adapted to engage to retain the stencil on the drum.

3. A stencil comprising a stencil sheet and a backing therefor extending beyond opposite margins of the sheet, said sheet being attached to the backing sheet along one side margin thereof, said backing sheet having a plurality of rows of apertures at its sides with which operative elements associated with a writing machine may engage.

4. In stenciling material, the combination with a stencil-sheet, of a backing sheet of firm but flexible material of greater width than the stencil-sheet, and means securing a side edge of said stencil-sheet to said backing sheet, said backing sheet having a row of apertures along each side edge thereof with which operativeA elements associated with a writing machine engage. v

5. In stenciling material, the combination with a stencil-sheet, of a backing sheet of firm but flexible material having greater width than the stencil sheet, said stencilsheet being secured to the backing sheet at one sidd edge only,said backing sheet having two rows of paired apertures, one row along each side edge thereof, the apertures in said rows being uniformly spaced, said backing fattached to the backing along one margin thereof, said backing having ruled lines thereon visible through the stencil sheetand a plurality of apertures therein arranged in rows at right angles to said lines, with which operative elements associated with a writing machine may engage.

7 In stenciling material, the combination with a stencil sheet, of a backing sheet therefor extending beyond opposite margins of the stencil sheet, said backing sheet having a row of paired apertures along each side edge thereof with which operative elements associated with a writingmachine 'may engage, said backing sheet also having ruled lines extending transversely across the same and between the spaced rows of apertures to guide the imprinting operation upon the stencil sheet. i n

8. In stenciling material, the combination with a stencil sheet, of a backing sheet therefor extending beyond opposite margins of the stencil sheet, said stencil sheet being attached to the backing sheet along one margin thereof, said backing sheet having a row of paired apertures along each side edge thereof with which operative elements associated with a writing -inachine may engage, said backing sheet also having ruled lines extending transversely across the same and between the spaced rows of apertures to guide the imprinting operation upon the stencil sheet.

9. In stenciling material, the combination with a stencil sheet, of a backing sheet therefor extending beyond opposite margins of the stencil sheet, said stencil Sheet being attached to the backing sheet along one margin thereof, said backing sheet having a row of paired apertures along each side edge thereof with which operative elements associated with a writing machine may engage, said backing sheet also having ruled lines extending transversely across the same and between the spaced rows of apertures to guide the imprinting operation upon the stencil sheet,

and a line of weakness extending along the inner side of the attached margin so that the ruled portion of the backing" sheet may be removed when the imprinting operation has been completed.

10. In stenciling material, the combination with a stencil sheet, of a backing sheet theregin so that the ruled portion of the backing sheet may be removed when the im rinting operation has been completed, the fiee end of the stencil sheet being provided with apertures with which spaced stud elements provided on the duplicating drum are adapted to engage to ret-ain the stencil on the drum.

11. In stenciling material, the combination with a stencil sheet, of a backing sheet therefor extending beyond opposite margins of the stencil sheet, said stencil sheet being attached to the backing sheet along one margin thereof, said backing sheet having a row of paired apertures along each side edge thereof with which operative elements associated with a writing machine may engage, said backing sheet also having ruled lines extending transversely across the same and between the spaced rows of apertures to guide the imprinting operation upon the stencil sheet, and a line of weakness extending along the inner side of the attached margin so that the ruled portionof the backing sheet may be removed when the imprinting operation has been completed, the free end of the stencil sheet being provided with apertures with which spaced stud elements provided on the duplicating drum are adapted to engage to retain the stencil on the drum in such a position that the imprinted lines on the stencil sheet run circumferentially of the drum.

ERNEST J. BRASSEUR.

for extending beyond opposite-margins of v the stencil sheet, said stencil sheet being attached to the backing sheet along one margin thereof, said backing sheet having a row of paired apertures along each side edge thereof with which operative elements associated with a writing machine may engage,

l said backing sheet also having ruled lines extending transversely across the same and between the spaced rows of apertures to yguide the imprinting operation upon the stencil sheet, and a line of weakness extend- 

